Add tests, schema sync safeguards, and query/handler improvements

- Add bun test suite: SQL generator and value unit tests, plus MariaDB
  integration tests gated on BUN_MARIADB_TEST_DB
- schema: add --dry-run and require confirmation (or --yes) before
  dropping tables/columns; block unapproved destructive statements
- Always AND targetId with the query, regardless of searchOperator
- Initialize lazily on first call; init throws instead of exiting
- Generate IN (?, ?, ...) lists for IN / NOT IN
- Share value binding between insert and update (booleans, embeddings,
  function values, "" -> NULL for non-text columns)
- Keep Buffers and convert BigInt/Date without a JSON round-trip
- DbSQL: report success for empty SELECT results
- Run update() in a transaction with row locking
- Key the client cache on the full connection config
- Consolidate identifier quoting, drop dead code, merge column lookup
- Read CLI version from package.json, pin @types/bun, chmod CLI on compile
- Rebuild dist

Co-Authored-By: Claude Opus 5.5 <[email protected]>

dist/utils/grab-table-fields.js

@@ -0,0 +1,9 @@
+import { readLiveSchema } from "../functions/live-schema";
+/**
+ * Grab a table's schema fields from the loaded (or last synced) schema.
+ */
+export default function grabTableFields(tableName) {
+    const dbSchema = global.DB_SCHEMA || readLiveSchema();
+    const tableSchema = dbSchema?.tables?.find((t) => t.tableName === tableName);
+    return tableSchema?.fields || [];
+}